Te traemos el hallazgo a esta pregunta, o por lo menos eso pensamos. Si continuas con alguna pregunta coméntalo y sin dudarlo te ayudaremos
Solución:
Esta es una rápida, es posible que desee ajustar las cosas y optimizar bastantes detalles …
class RoundedButton : Button
GraphicsPath GetRoundPath(RectangleF Rect, int radius)
float r2 = radius / 2f;
GraphicsPath GraphPath = new GraphicsPath();
GraphPath.AddArc(Rect.X, Rect.Y, radius, radius, 180, 90);
GraphPath.AddLine(Rect.X + r2, Rect.Y, Rect.Width - r2, Rect.Y);
GraphPath.AddArc(Rect.X + Rect.Width - radius, Rect.Y, radius, radius, 270, 90);
GraphPath.AddLine(Rect.Width, Rect.Y + r2, Rect.Width, Rect.Height - r2);
GraphPath.AddArc(Rect.X + Rect.Width - radius,
Rect.Y + Rect.Height - radius, radius, radius, 0, 90);
GraphPath.AddLine(Rect.Width - r2, Rect.Height, Rect.X + r2, Rect.Height);
GraphPath.AddArc(Rect.X, Rect.Y + Rect.Height - radius, radius, radius, 90, 90);
GraphPath.AddLine(Rect.X, Rect.Height - r2, Rect.X, Rect.Y + r2);
GraphPath.CloseFigure();
return GraphPath;
protected override void OnPaint(PaintEventArgs e)
base.OnPaint(e);
RectangleF Rect = new RectangleF(0, 0, this.Width, this.Height);
using (GraphicsPath GraphPath = GetRoundPath(Rect, 50))
this.Region = new Region(GraphPath);
using (Pen pen = new Pen(Color.CadetBlue, 1.75f))
pen.Alignment = PenAlignment.Inset;
e.Graphics.DrawPath(pen, GraphPath);
Obviamente, dado que tenemos una clase, podemos almacenar en caché el GraphicsPath
en una variable de clase. Y, por supuesto, eliges el color …
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.ComponentModel;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace button2
public partial class Form1 : Form
private Button button1;
private GroupBox box;
public Form1()
InitializeComponent();
show();
private void show()
box = new GroupBox();
button1 = new Button();
button1.Location = new Point(50, 50);
ElipseControl nn = new ElipseControl();
nn.TargetControl = button1;
button1.Text = "First Name";
button1.BackColor = Color.Cyan;
button1.FlatStyle = FlatStyle.Flat;
button1.FlatAppearance.BorderSize = 0;
button1.FlatAppearance.BorderColor = Color.White;
nn.CornerRadius = 10;
button1.ForeColor = Color.Blue;
button1.Font = new Font("Arial", 9, FontStyle.Bold);
box.Controls.Add(button1);
box.AutoSize = true;
this.Controls.Add(box);
class ElipseControl : Component
[DllImport("Gdi32.dll", EntryPoint = "CreateRoundRectRgn")]
public static extern IntPtr CreateRoundRectRgn
(
int nLeftRect,
int nTopRect,
int nRightRect,
int nBottomRect,
int nWidthEllipse,
int nHeightEllipse
);
private Control _cntrl;
private int _CornerRadius = 30;
public Control TargetControl
get return _cntrl;
set
_cntrl = value;
_cntrl.SizeChanged += (sender, eventArgs) => _cntrl.Region = Region.FromHrgn(CreateRoundRectRgn(0, 0, _cntrl.Width, _cntrl.Height, _CornerRadius, _CornerRadius));
public int CornerRadius
get return _CornerRadius;
set
_CornerRadius = value;
if (_cntrl != null)
_cntrl.Region = Region.FromHrgn(CreateRoundRectRgn(0, 0, _cntrl.Width, _cntrl.Height, _CornerRadius, _CornerRadius));
Este es un ajuste en la respuesta de TaW para ajustar más fácilmente borderRadius y borderThickness. Si obtiene un espacio en blanco aleatorio entre el borde y el color de fondo del botón, es necesario modificar m.
public class RoundedButton : Button
GraphicsPath GetRoundPath(RectangleF Rect, int radius)
float m = 2.75F;
float r2 = radius / 2f;
GraphicsPath GraphPath = new GraphicsPath();
GraphPath.AddArc(Rect.X + m, Rect.Y + m, radius, radius, 180, 90);
GraphPath.AddLine(Rect.X + r2 + m, Rect.Y + m, Rect.Width - r2 - m, Rect.Y + m);
GraphPath.AddArc(Rect.X + Rect.Width - radius - m, Rect.Y + m, radius, radius, 270, 90);
GraphPath.AddLine(Rect.Width - m, Rect.Y + r2, Rect.Width - m, Rect.Height - r2 - m);
GraphPath.AddArc(Rect.X + Rect.Width - radius - m,
Rect.Y + Rect.Height - radius - m, radius, radius, 0, 90);
GraphPath.AddLine(Rect.Width - r2 - m, Rect.Height - m, Rect.X + r2 - m, Rect.Height - m);
GraphPath.AddArc(Rect.X + m, Rect.Y + Rect.Height - radius - m, radius, radius, 90, 90);
GraphPath.AddLine(Rect.X + m, Rect.Height - r2 - m, Rect.X + m, Rect.Y + r2 + m);
GraphPath.CloseFigure();
return GraphPath;
protected override void OnPaint(PaintEventArgs e)
int borderRadius = 50;
float borderThickness = 1.75f;
base.OnPaint(e);
RectangleF Rect = new RectangleF(0, 0, this.Width, this.Height);
GraphicsPath GraphPath = GetRoundPath(Rect, borderRadius);
this.Region = new Region(GraphPath);
using (Pen pen = new Pen(Color.Silver, borderThickness))
pen.Alignment = PenAlignment.Inset;
e.Graphics.DrawPath(pen, GraphPath);
¡Salud!
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